Ventilating shutters



April 30, 1929. I R. A. wbRKMAN 1,711,215

VENTILATING smlrwsn Filed Jan. 19, 1928 '7 a- -.Ll- I Fatented Apr. 39,1229.

" lfilLZlE ROSS A. WORKMAN, OF TULSA, OKLAHOMA.

VENTILATING SHUTTERS.

Application filed JanuarylB, 1928. Serial No. 247,960.

The present invent-ion relates to ventilating shutters such as used onthe radiators of the water cooling systems for automobile and airplanecng'ines, and the like, and aims to provide novel means for connectingthe shutters to control the opening movements thereof, this inventionbeing an improvement on the ventilating shutters disclosed in my pendingapplication Serial No. 187,959, filed April 1927. With the presentimprovements it is pos sible with a vertical series of shutters to openthem in succession beginning with the upper shutter, which is especiallyadvantageous for use in automobile and airship radiators, it beingwell'known that the radiators will be come hottest at the top and aremost likely to freeze at the lower portions thereof. Therefore, byopening'the shutters from the top downward in succession the air isfirst. admitted through the upper portion. 01 the radiator, where thecooling effect is most needed, and by opening the shutters further airis gradually admitted at lower points although in less amounts thanhigher up, the upper shutters opening. further as the lower shutters areopened in succession so that the maxi mum flow of air is through theupper portion of the radiator, and only after the upper shut- 9 ters areopened will the lower shutters be opened. l

Vi ith the foregoing and other objects-in view which will be a arent asthe descri a- .tion proceeds, the invention resides in the constructionand arrangement of parts, as hereinafter described and claimed, it beingunderstood that changes can be made within the scope of what is claimed,without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawing, wherein-Figure 1 is a vertical section of a ventilating shutter c onstructionembodying the improvements, taken on the line 1-1 of Fig. 2. A lg. 2 isa fragmentary rear view of the device, portions being broken away. I

Fig. 3 is a'horizontal section on the line 3-3 ot Fig. 1, portions beingbroken away. l ig. Al is a fragmentary section illustrating amodification.

The shutters 7 shown in- Figs. 1, 2 and 3 are of suitable sheet metaland are arranged in a vertical series, being disposed horizontally. Theshutters arehingedly mounted to swing open rearwardly and upwardly, the

upper edges of said shutters belng bent around, as at 8, horizontalhinge rods 9 which have projecting terminals mounted for rotation insuitable vertical bearing bars 10. The shutters are arrangedwithin orbehind an opening 11 in a shell 12, which may be the radiator shell or ashell applied in front of the radiator,'as well known. The lowerportions of the shutters 7 are bent or oii set rearwardly downwardly andforWardly,-as at 13, to provide grooved portions to snugly receive thebeads 8 of the shutters immediately below, when the shutters are closed,as seen at the lower portion of Fig. 1, so as to provide substantiallyairtight contact of the shutters in closedposition. The lower edgeportions of the shutters thereby extend partly under the beads 8 of theshutters imn'iediately below, when the shutters are closed, and thelower or free edges ofthe shutters are bent, as at 14, around rods whichstiffen and reinforce the shutters. The beads 14 and rods 15 are thusadapted to move partly below the corresponding beads 8 and rods 9, whenthe shutters are closed, thereby providinn amore compact arrangement. Iv

rflach shutter has a yokelG welded or otherwise secured to theridgeformed by the grooved portion or offset 13 above the bead 14c, and, saidyokes extend rearwardly and have horizontal hinge portions or rods 17parallel with and above the corresponding rods 15. V

The shutters are connected by links 18 which have their upper endsembracing the hinge rods 15 within openings formed by the interruptionsoi the beads 14, as seen in Fi 2, and thelower ends of the rods engagethe hinge portions 17 of the yokes of theshutters immediately below. v

A link or bar 19 is connected to the yoke 16 of the uppermost shutterand may beamtrolled by a thermostat or by a handieor other suitablemeans for opening and closing the shutters, the shutters operating thesame for either automatic or manual'control.

The arrangement of the yokes 16 and links 18 is such that when theshutters are closed, as seen at the lower portion of Fig. 1, each link18 which extends downwardly from the corresponding shutter'issubstantially on a line with the hinge rod or axis 9 of said shutter, asindicated at 20. Thus, the shutter and link extending downwardlytherefrom maybe said to be in substantially dead center or lookingposition, with the shutter and link straightened out with reference tothe toggle-action thereof. Now, when the bar or ter, the uppermostshutter is swung upwardly by said bar 19, and the uppermost or firstshutter in swinging rearwardly will swing the upper end of the firstlink rearwardly, thereby breaking the toggle formed by the first shutterand first link. The first link is pulled upwardly with the firstshutter. This will start the second shutter rearwardly and upwardly, andafter it starts to swing rearwardly it pulls the second link upwardlywhich in turn then starts the third shutter in its opening movement.WVith this arrangement it is necessary that each shutter open rearwardlyslightly before the link extending downwardly therefrom is raised tostart the rearward movement 01? the next lower shutter, and consequentlythe shutters open in succession from the HDDQNHOSt shutter downwardly asseen in Fig. 1. This will open the shutters from the top downward sothat the air is first admitted through the upper portion of the shutterand is gradually admitted at points lower down as the opening movementof the shutters is continued. The shutters not only open in successionfrom the uppermost shutter downwardly, but also swing open throughgreater angles or to greater extents from the u ipermost shutterdownwardly, so that larger streams of air are admitted through the upperportion of the shutter than through portions lower down. Then the bar 19is moved downwardly to close the shutters the shutters close insuccession from the lowermost shutter upwardly, just reverse to theopening movements of said shutters.

4; illustrates the lower edge portion 13 ot' the shutter 7 bent toextend under the head 8 and rod 9', and the upper end of the link 18 isconnected to the hinge portion or rod 15' of a yoke 14: secured to theportion 13 similar to the yoke 16 having the rod or hinge portion 17.Thus, the head 14; and rod 15 hereinbefore described are omitted and aresubstituted by the yoke l l corresponding with the yoke 16. Both ends ofthe links are therefore connected with the yokes which are welded orotherwise secured to the grooved portions 13 01 the shutters.

Having thus described the invention, what is claimed as new is 1. Aseries of shutters each having a beaded hinge portion and an offsetportion to tit partly around the beaded hinge portion of the companionshutter, and links between the shutters er eh having one end h'ingedlyconnected with the ofiset portion of one shutter and having its otherend hingedly connected with the companion shutter oeyond said oil"- setportion thereof. 1

2. A vertical series of shutters each having a beaded hinge portion andan offset portion lower down to tit partly around the beadedhingeportion of the next lower shutter, and links between the shutterseach having one end hingedly connected with one shutter be low saidoflset portion thereof and having its other end hingedly connected withthe next lower shutter.

3. A vertical series of shutters each having a beaded hinge portion andan offset portion lower down to tit partly around the beaded hingeportion ofthe next lower shutter, and links Jetween the shutters havingone end hingedly connected with one shutter below the oiiset portionthereof to move under the beaued hinge portion of the next lowershutter, the other end of each link being hingedly connected with theofiset portion 01% said next lower shutter.

In testimony whereof I hereunto ailix my signature.

nose A. woiixMAN.

